package com.manong.config.redis;

import com.fasterxml.jackson.annotation.JsonAutoDetect;
import com.fasterxml.jackson.annotation.PropertyAccessor;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.cache.RedisCacheConfiguration;
import org.springframework.data.redis.cache.RedisCacheManager;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.serializer.Jackson2JsonRedisSerializer;
import org.springframework.data.redis.serializer.RedisSerializationContext;
import org.springframework.data.redis.serializer.RedisSerializer;
import org.springframework.data.redis.serializer.StringRedisSerializer;

import java.time.Duration;

/**
 * redis配置类
 */
@Configuration
public class RedisConfig {
  //缓存过期时间
  @Value("${spring.redis.expire}")
  private Long expire;
  
  @Bean
  public RedisTemplate<String, Object> redisTemplate(RedisConnectionFactory factory) {
    RedisTemplate<String, Object> template = new RedisTemplate<String, Object>();
// 配置连接工厂
    template.setConnectionFactory(factory);
//使用Jackson2JsonRedisSerialize 替换默认序列化(默认采用的是JDK序列化)
    Jackson2JsonRedisSerializer jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer(Object.class);
//解决查询缓存转换异常的问题
    ObjectMapper om = new ObjectMapper();
//设置在生成 json 串时，对象中的成员的可见性
    om.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
//存储到redis的json将是有类型的数据
//指定序列化输入的类型，类必须是非final修饰的，final修饰的类，比如String,Integer等会跑出异常
    om.activateDefaultTyping(om.getPolymorphicTypeValidator(),
      ObjectMapper.DefaultTyping.NON_FINAL);
    jackson2JsonRedisSerializer.setObjectMapper(om);
    StringRedisSerializer stringRedisSerializer = new StringRedisSerializer();
// key采用String的序列化方式
    template.setKeySerializer(stringRedisSerializer);
// hash的key也采用String的序列化方式
    template.setHashKeySerializer(stringRedisSerializer);
// value序列化方式采用jackson
    template.setValueSerializer(jackson2JsonRedisSerializer);
// hash的value序列化方式采用jackson
    template.setHashValueSerializer(jackson2JsonRedisSerializer);
    template.afterPropertiesSet();
    return template;
  }
  
  //@Cacheable注解字符集编码配置
  @Bean
  public RedisCacheManager cacheManager(RedisConnectionFactory factory) {
    RedisCacheConfiguration config =
      RedisCacheConfiguration.defaultCacheConfig();
    config.entryTtl(Duration.ofMinutes(expire))//缓存过期时间
      .serializeKeysWith(RedisSerializationContext.SerializationPair.fromSerializer(RedisSerializer.string()))
      .serializeValuesWith(RedisSerializationContext.SerializationPair.fromSerializer(RedisSerializer.json()));
    return RedisCacheManager
      .builder(factory)
      .cacheDefaults(config)
      .build();
  }
}
